When Apple's mobile phone locks the screen, it suddenly displays the bank card and pays by fingerprint.

This is an Apple setting: wallet and apple pay press the home button twice and payment will appear. But if you don't want to watch it, just turn it off. The shutdown steps are as follows:

Turn on the phone and find the settings.

Find the wallet and apple pay and click to enter.

Then turn off the "double-click the home button twice" option as shown below.